CN206074407U - A kind of optical scatter thing（PM2.5/PM10）Monitor - Google Patents
A kind of optical scatter thing（PM2.5/PM10）Monitor Download PDFInfo
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- CN206074407U CN206074407U CN201621130038.1U CN201621130038U CN206074407U CN 206074407 U CN206074407 U CN 206074407U CN 201621130038 U CN201621130038 U CN 201621130038U CN 206074407 U CN206074407 U CN 206074407U
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- Prior art keywords
- light scattering
- air inlet
- chamber
- optical scatter
- spray point
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Abstract
This utility model provides a kind of optical scatter thing（PM2.5/PM10）Monitor, solves in existing light scattering method measurement, and because particle size is little, scattered signal is weak, causes measurement result to produce the problem of deviation.The first air inlet pipe of aerator Jing is communicated with hothouse, valve and effusion meter are sequentially arranged with the first air inlet pipe between aerator and hothouse, hothouse Jing is provided with the second air inlet pipe of granule cutting head and connects in dispersing chamber upper end, the upper end air inlet in dispersing chamber lower end outlet light scattering chamber, the outdoor circumferentially-spaced of dispersion is evenly equipped with multi-group electrode, electrode is connected with negative supply, one side of light scattering chamber air inlet is provided with light generating unit, another side in the light scattering chamber is sequentially provided with Fu Shi lens and photomultiplier tube, the photomultiplier tube Jing data collecting cards connect computer, the air inlet lower end in the light scattering chamber is provided with spray point, the light scattering chamber of the spray point lower end is provided with gas outlet, the positive supply that the spray point Jing wires connection is placed in outside light scattering chamber.
Description
Technical field
This utility model is related to the monitoring of Atmospheric particulates, particularly a kind of optical scatter thing（PM2.5/PM10）Monitoring
Instrument.
Background technology
With the continuous development of industry, atmospheric pollution situation is more and more severeer.Atmospheric particulates refer to be dispersed in air
In solid-state or liquid particles shape material general name, about 0.1 μm -100 μm of its particle size range.The monitoring range of Atmospheric particulates
The main overall suspended pellet TSP for including aerodynamic diameter less than or equal to 100 μm（Total Suspended
Particulate), pellet PM of the aerodynamic diameter less than or equal to 10 μm10（Particles with
10 μm of or less of Diameters of) and fine particle PM of the aerodynamic diameter less than or equal to 2.5 μm2.5
（Particles with Diameters 2.5 μm of or less of of) three kinds.Weather scientist and medical expert think, by thin
Harm of the haze air that grain thing is caused to health is even greater than sandstorm.Particulate matter of the particle diameter more than 10 μm, can be kept off
Outside the nose of people；Particle diameter can enter upper respiratory tract in 2.5 μm -10 μm of particulate matter, partly can be by the row such as sputum
Go out in vitro, part can be stopped by the fine hair of nasal cavity, relatively small to human health damage；Particle diameter thin less than 2.5 μm
Grain thing, is difficult to be blocked, and bronchus are directly entered after being inhaled into human body, disturbs the gas exchange of pulmonary, causes asthma, bronchus
The diseases such as scorching and cardiovascular diseasess.
Particle concentration monitoring is the important component part of atmosphere environment supervision, mainly has oscillating balance method, filter membrane to weigh
Method, piezoquartz method, β attenuation sensors, optical transmission method and light scattering method.In actual monitoring, because instrument is repeatable
Usability and accuracy, mainly use oscillating balance method and light scattering method to particle concentration monitoring, although oscillating balance method is smart
Degree is high, but cost intensive, the development of the photoelectric device such as photodetector, signal amplifier in recent years so that light scattering method becomes
Prefered method., typically using the light source of single or several wavelength, it is weak to there is little particle scattered signal, measurement result for light scattering method
Produce the defect of deviation.
Utility model content
For above-mentioned situation, to overcome the defect of prior art, this utility model to provide a kind of optical scatter thing
（PM2.5/PM10）Monitor, efficiently solves in existing light scattering method measurement, and because particle size is little, scattered signal is weak, causes
Measurement result produces the problem of deviation.
This utility model includes aerator, and first air inlet pipe of aerator Jing is communicated with hothouse, the aerator and
Valve and effusion meter are sequentially arranged with the first air inlet pipe between hothouse, the hothouse Jing is provided with the second of granule cutting head
Air inlet pipe is connected in dispersing chamber upper end, the upper end air inlet in the dispersing chamber lower end outlet light scattering chamber, the dispersing chamber
Outer circumferentially-spaced is evenly equipped with multi-group electrode, and the electrode is connected with negative supply, and a side of light scattering chamber air inlet is provided with
Light generating unit, another side in the light scattering chamber are sequentially provided with Fu Shi lens and photomultiplier tube, the photomultiplier tube Jing
Data collecting card connects computer, and the air inlet lower end in the light scattering chamber is provided with spray point, the light scattering of the spray point lower end
Chamber is provided with gas outlet, the positive supply that the spray point Jing wires connection is placed in outside light scattering chamber.
The wire is insulated conductor.
The air inlet in the spray point and light scattering chamber, gas outlet are on same centrage.
The spray point is placed in the center line of light scattering chamber air inlet and the center line intersection of Fu Shi lens.
The smooth generating unit is made up of laser instrument with the beam expanding lens that light scattering chamber is connected on the right side of laser instrument.
The laser instrument, beam expanding lens, spray point, Fu Shi lens and photomultiplier tube are centrally located on same centrage.
Dispersion outdoor surrounding has one group of five electrode every 90 °.
The negative supply voltage is 15KV-30KV, pulse frequency is 100Hz-300Hz.
Drainage screen is set at the fan inlet, and the drainage screen is 150 mesh filter screens.
The hothouse, the inner wall surface roughness of dispersing chamber are less than 2.5 μm.The angle of each several part wherein in internal cavities
Seamlessly transit, without dead angle.
The granule cutting head is PM2.5Or PM10Cutting head.
The optical scatter thing that this utility model is provided（PM2.5/PM10）Monitor, makes to gather light after particulate matter is negatively charged
At positive charge in scattering chamber, little particle is gathered into into bulky grain, improves the scattered light intensity of particulate matter, enhancing signal intensity can
With it is accurate, quickly measure PM2.5/PM10Concentration.
Description of the drawings
Fig. 1 is this utility model front view structure figure.
Fig. 2 is one schematic diagram of spray point embodiment in this utility model.
Fig. 3 is two schematic diagram of spray point embodiment in this utility model.
It is numbered in figure：Aerator 1, the first air inlet pipe 2, hothouse 3, valve 4, effusion meter 5, granule cutting head 6, second
Air inlet pipe 7, dispersing chamber 8, light scattering chamber 9, electrode 10, negative supply 11, Fu Shi lens 12, photomultiplier tube 13, data collecting card
14, computer 15, spray point 16, gas outlet 17, wire 18, positive supply 19, laser instrument 20, beam expanding lens 21, drainage screen 22.
Specific embodiment
Specific embodiment of the present utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1 to Figure 3, this utility model provides a kind of optical scatter thing monitor, and the monitor includes drum
Blower fan 1, hothouse 3, dispersing chamber 8, arrange 150 mesh drainage screens 22 at the air inlet of aerator 1, aerator 1 passes through the first air inlet
Pipe 2 is connected with hothouse 3, is provided with valve 4 and effusion meter 5 in the first described air inlet pipe 2, is provided with wireless in effusion meter 5
Transport module, effusion meter 5 passes through wire or wireless transport module connects computer 15, and the temperature of hothouse 3 is 10 DEG C -100 DEG C, is done
Dry room 3 passes through the PM arranged in the second air inlet pipe 72.5/PM10It is connected with dispersing chamber 8 after cutting head, the air vent of the second air inlet pipe 7
The top center of connection dispersing chamber 8,8 first half of the dispersing chamber are the cylindrical shape of sealing, and lower half is infundibulate, light scattering chamber
9 air inlet makes uniform point of the electronegative electrode 10 of particulate matter with the air inlet of dispersing chamber 8 and gas outlet on same centrage
On 8 wall of dispersing chamber, 8 outer surrounding of dispersing chamber has one group of five electrode 10 to cloth every 90 °, and 10 crest voltage in parallel of electrode is
25KV, the negative supply 9 of pulse frequency 150Hz, the lower end outlet light scattering chamber 9 of dispersing chamber 8, negatively charged particulate matter enters light
Spray point 16 behind scattering chamber 9 in positively charged is gathered into bulky grain, and bulky grain scatters the scattered light to be formed and passes through Fu Shi lens 12
It is irradiated on photomultiplier tube 13, converts optical signal into the signal of telecommunication；It is directly proportional to particulate matter accumulated quality according to accumulation voltage
Relation, obtains the gross mass of particulate matter.In measurement process, not air inlet is measured first, spray point 16 is not charged, what light scattering was formed
Optical signal, the voltage being thus converted to, quality are required to subtracting background result as background result, the final result of measurement.
According to accumulation voltage calculate particulate matter gross mass be prior art, this utility model solve technical problem be so that particulate matter
Aggregation becomes big, therefore the computational methods of relevant accumulation voltage measuring and calculating particulate matter gross mass will not be described here.According to effusion meter 5
Flow velocity and the inlet period for arranging, obtain Jing PM2.5/PM10The air volume of cutting head, particulate matter（PM2.5/PM10）Test total matter
Measure the mass concentration that particulate matter is obtained with the ratio of charge volume.The optical scatter thing that this utility model is provided（PM2.5/PM10）Prison
Instrument is surveyed, particulate matter is gathered into the spray point 16 of the positively charged in light scattering chamber 9 after negatively charged, little particle is gathered into into big
Grain, improves the scattered light intensity of particulate matter, and enhancing signal intensity can accurately, quickly measure PM2.5/PM10Concentration.
Described spray point 16 is located at the center line of 8 lower end of dispersing chamber outlet and the intersection of 12 center line of Fu Shi lens, electric discharge
Thin copper wire connection positive supply 19 of the pin 16 by tape insulation crust, the voltage of positive supply 19 is 0.1KV-1KV.
Further, the described connection photomultiplier tube 13 of Fu Shi lens 12, described photomultiplier tube 13 are sequentially connected
Data collecting card 14, computer 15 outside light scattering chamber 9.Shown light scattering chamber is provided with the closed circular of air inlet and gas outlet
Cylindrical cavity.
The embodiment one of spray point is illustrated in figure 2, which is a spicule, and spicule one end is placed in the turnover of light scattering chamber
Center between mouthful, the other end are fixed on light scattering chamber and reach Jing insulated conductors connection positive electricity outside light scattering chamber
Source.
Fig. 3 show the embodiment two of spray point, and which is the spicule of portion envelops insulated hull, and spicule is not wrapped up absolutely
Center between the air inlet for being partially disposed in light scattering chamber of edge skin and gas outlet, spicule rear end are enclosed with insulated hull
Partially pass through light scattering cavity wall Jing insulated conductor connection positive supply.
This utility model can connect air exhauster at the gas outlet in light scattering chamber so that electric discharge of the air inlet in light scattering chamber
More promptly assemble at pin.
The embodiment of the above, simply preferred embodiment of the present utility model not limit this utility model reality
Apply scope, therefore the equivalence changes done of all constructions according to described in this utility model the scope of the claims, feature and principle or modification, all should
It is included in this utility model claim.
Claims (10)
1. a kind of optical scatter thing monitor, including aerator, it is characterised in that the first air inlet pipe of aerator Jing connection
There is hothouse, in the first air inlet pipe between the aerator and hothouse, be sequentially arranged with valve and effusion meter, the hothouse
Jing is provided with the second air inlet pipe of granule cutting head and connects in dispersing chamber upper end, the dispersing chamber lower end outlet light scattering chamber
Upper end air inlet, dispersion outdoor circumferentially-spaced are evenly equipped with multi-group electrode, and the electrode is connected with negative supply, the light scattering
One side of chamber air inlet is provided with light generating unit, and another side in the light scattering chamber is sequentially provided with Fu Shi lens and photomultiplier transit
Pipe, the photomultiplier tube Jing data collecting cards connect computer, and the air inlet lower end in the light scattering chamber is provided with spray point, described
The light scattering chamber of spray point lower end is provided with gas outlet, the positive supply that the spray point Jing wires connection is placed in outside light scattering chamber.
2. a kind of optical scatter thing monitor according to claim 1, it is characterised in that the wire is led for insulation
Line.
3. a kind of optical scatter thing monitor according to claim 1, it is characterised in that the spray point and light scattering
The air inlet in chamber, gas outlet are on same centrage.
4. a kind of optical scatter thing monitor according to claim 1, it is characterised in that the spray point is placed in light and dissipates
Penetrate the center line of chamber air inlet and the center line intersection of Fu Shi lens.
5. a kind of optical scatter thing monitor according to claim 1, it is characterised in that the smooth generating unit is by laser
Device is constituted with the beam expanding lens that light scattering chamber is connected on the right side of laser instrument.
6. a kind of optical scatter thing monitor according to claim 5, it is characterised in that the laser instrument, beam expanding lens,
Spray point, Fu Shi lens and photomultiplier tube are centrally located on same centrage.
7. a kind of optical scatter thing monitor according to claim 1, it is characterised in that dispersion outdoor surrounding is every
There is one group of five electrode every 90 °.
8. a kind of optical scatter thing monitor according to claim 1, it is characterised in that at the fan inlet
Drainage screen is set, and the drainage screen is 150 mesh filter screens.
9. a kind of optical scatter thing monitor according to claim 1, it is characterised in that the hothouse, dispersing chamber
Inner wall surface roughness be less than 2.5 μm.
10. a kind of optical scatter thing monitor according to claim 1, it is characterised in that the granule cutting head is
PM2.5Or PM10Cutting head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621130038.1U CN206074407U (en) | 2016-10-18 | 2016-10-18 | A kind of optical scatter thing（PM2.5/PM10）Monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621130038.1U CN206074407U (en) | 2016-10-18 | 2016-10-18 | A kind of optical scatter thing（PM2.5/PM10）Monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206074407U true CN206074407U (en) | 2017-04-05 |
Family
ID=58442708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621130038.1U Expired - Fee Related CN206074407U (en) | 2016-10-18 | 2016-10-18 | A kind of optical scatter thing（PM2.5/PM10）Monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206074407U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404625A (en) * | 2016-10-18 | 2017-02-15 | 河南省计量科学研究院 | Light-scattering particle matter (PM2.5/PM10) monitor |
| CN108426809A (en) * | 2018-02-28 | 2018-08-21 | 杭州电子科技大学 | One kind being based on the sidewise scattered round-the-clock PM2.5 concentration real-time detection apparatus of CCD |
| CN109557004A (en) * | 2017-09-27 | 2019-04-02 | 田果成 | Detect cavity configuration, detection device, capture apparatus and terminal |
| CN116347743A (en) * | 2023-02-06 | 2023-06-27 | 散裂中子源科学中心 | Diffuser for extracting extremely weak particle beams |
-
2016
- 2016-10-18 CN CN201621130038.1U patent/CN206074407U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404625A (en) * | 2016-10-18 | 2017-02-15 | 河南省计量科学研究院 | Light-scattering particle matter (PM2.5/PM10) monitor |
| CN106404625B (en) * | 2016-10-18 | 2019-12-24 | 河南省计量科学研究院 | Light scattering particulate matter (PM 2.5/PM 10) monitor |
| CN109557004A (en) * | 2017-09-27 | 2019-04-02 | 田果成 | Detect cavity configuration, detection device, capture apparatus and terminal |
| CN108426809A (en) * | 2018-02-28 | 2018-08-21 | 杭州电子科技大学 | One kind being based on the sidewise scattered round-the-clock PM2.5 concentration real-time detection apparatus of CCD |
| CN116347743A (en) * | 2023-02-06 | 2023-06-27 | 散裂中子源科学中心 | Diffuser for extracting extremely weak particle beams |
| CN116347743B (en) * | 2023-02-06 | 2023-11-10 | 散裂中子源科学中心 | Diffuser for extracting extremely weak particle beams |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170405 Termination date: 20201018 |